在http://linux.softpedia.com/progDownload/Dos2Unix-Download-5519.html下载hd2u-1.0.0.tgz
[root@localhost ~]#tar -zxf hd2u-1.0.0.tgz
在http://rpm.pbone.net/index.php3/stat/4/idpl/17960519/dir/other/com/popt-1.14-2rt.x86_64.rpm.html下载popt-1.14-2rt.x86_64.rpm
[root@localhost ~]#rpm -ivh popt-1.14-2rt.x86_64.rpm
[root@localhost ~]#cd hd2u-1.0.0
[root@localhost ~]#./configure
[root@localhost ~]#make
[root@localhost ~]#make install
[root@localhost ~]#whereis dos2unix
dos2unix: /usr/local/bin/dos2unix
安装成功